Challenges

Dimensions of the tuning screws optimized to reduce the distance between two channel Filters.

Preliminary design:

RF design : trade-off performed to implement a manifold instead of Isolators and Coupler.

Mechanical design ensured by flexible brackets on front face and rigid structure at CMUX output. Thermo-mechanical decoupling between Input and Output of each CMUX

Acceleration on components : test performed on Isolator sample

According to the trade-off results, the preliminary design is confirmed as the best compromise between mass, footprint, assembling constraints, and input/output access.

Final design:

A Mechanical structural Breadboard of the Stacked CMUX, representative in mass and inertias, has been developed in order to measure the dynamic responses through a series of vibrations tests, and to verify and to readjust the damping factor inside the numerical mechanical model.

The mechanical design has been optimized considering several aspects :